http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54515
--- Comment #3 from Werner Henze <werner.henze at alumni dot tu-berlin.de> 2012-09-07 11:49:43 UTC --- Created attachment 28145 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28145 preprocessed file as written by the sigsegv handler Just saw a second sigsegv. This might be related to the bug (including same project files), but it might also be another bug. This compilation succeeds with -O0 and -O1, it crashes with -O3, -O2 and -Os. In this case there is no anonymous namespace involved.